Ruby Kyanite Tumbles

You will receive one random tumble Sizes will vary Small - under 20g / 0.044lbs / 0.71oz average size is around 0.50" - 1" Medium - under 30g / 0.066lbs / 1.06oz average size is around 0.90" - 1.10" Large - under 40g / 0.088lbs / 1.41oz average size is around 1" - 1.25 Soooo much ruby!! She GLOWS! Bright in the UV light Ruby Kyanite is a naturally occurring combination of red Ruby and blue Kyanite. It was found in South India. Ruby is a red variety of corundum, an aluminum oxide with a hexagonal crystal system and a hardness of 9. Blue Kyanite is an aluminum-silicate mineral with a triclinic crystal system and a hardness varying from 4.5 to 7, depending on the axis. Ruby Kyanite is predominantly Kyanite, and is a rather dark blue, containing somewhat muted red spots of Ruby.